Space mechanic orbital collapse chase

A space mechanic in a sealed full spacesuit with a clearly visible protective space helmet and closed visor sprints across a collapsing orbital cargo dock as a gigantic spacecraft crashes sideways through the station behind him. 

The helmet and spacesuit remain on and unchanged for the entire video.  Ground-level camera races beside his boots as explosions rip open the deck. He passes the camera and it whips around just as a massive cargo container smashes down in front of him. He drops beneath it while it skids over him, showering sparks.  

The floor suddenly tears away. The camera drops with him as he falls through the station, crashes through a lower maintenance platform, and grabs a hanging cable.  

Final shot: the camera swings beneath him, revealing half the orbital station breaking apart above while hundreds of burning fragments fall toward the planet.  Ultra-realistic hard sci-fi, brutal speed, massive destruction, clear physics, enormous scale, IMAX quality. Helmet always visible, visor always closed, never remove the helmet, no exposed head or face. No famous or recognizable faces.